diff --git a/index.js b/index.js
index 5dee72b..898d603 100644
--- a/index.js
+++ b/index.js
@@ -20,7 +20,7 @@ var logger = new (winston.Logger)({
       }
     }),
     new (winston.transports.DailyRotateFile)({
-	  filename: 'log_',
+	  filename: 'log',
       timestamp: function() {
         return strftime('%F %T', new Date());
       },